Improvement in machines for welding metal tubes



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s. P. M .TASKERL MACHINE FOR WELDING METAL TUBES.

-Patented Jan.30,187'7.

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Patented. Jan.30, 1877.

UNITED STATES STEPHEN P. M. TASKER, OF'PHILADELPHIA, PENNSYLVANIA.l

PATENT OEErc IMPROVEMENT IN MACHINES FOR WELDING METAL TUBES.

Specification forming part of Letters Patent No. 186,769, dated January 30, 1877; application led December 9, 1876.

To all whom 'it may concern Be it known that I, STEPHEN P. M. TAS- KER., of the city and county of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Machines for Lap-Welding Metal Tubes, which improvement is fully set forth in the following specication, reference being had to the accompa- -nying drawings, in whichbigure l is an isometrical view of the machine and furnace. same, having a tube, K, in position for the heating and welding operation. Fig. 3 is a vertical section at the line a: :r of Fig. 2.

Like letters of reference inall the figures indicate the same parts.

The nature of my invention consists in the combination of a trip-hammer with an anvil and furnace, in such a manner that the tubes which rest on the face of an opening which passes through the top of the furnace and anvil, in line therewith, and are passed along over the same as the edges become heated, are welded by the repeated strokes of the hammer, which is arranged to operate within the tubes.

The furnace and anvil have concave seats for t .e tubes, so that the latter are kept in their lateral position as they are moved along, and the welding-edges brought directly over the opening in the top of the furnace and vertical with the hammer. The said opening is-of such dimension as to canse the passage of a current of heat that will only bring the Welding-edges of the tube to a welding-heat, and thus to prevent the deterioration of the metal in the body of the tube by reheating.

A is the anvil on the bed-plate B. C G are housings, which are also connected with the bed-plate. D is the hammer, having a lever, E, which has fulcrum-pins a a supported in bearings of the housings. G is a trippingwheel on the shaft H, Whose journals b b rest Fig. 2 is a top view of the to keep the tube K in its lateral position as it is moved along. The tube is pushed forward by hand or otherwise, the edges of the tube being brought to a Welding-heat, and as the.

heated portion of the, tube passes over the anvil-the repeated blows of the hammer D form a perfect welding of the same.

By combining the anvil and hammer .with the furnace, as described, in close proximity thereto, the welding-edges lose but little of the heat before they receive the welding-blows of the hammer.

I do notconine myself to operating the hammer in the manner described, as other devices may be used for giving it either an oscillatory or vertical movement, as may be desired.

[ claim as my invention- 1. The furnace J, having a narrow opening, d, at its top for the passage of the heat to the seam of the tube, in combination with the anvil-block A and the hammer D, the latter 'arranged in line with said opening and anvil, in a manner to' permit the hammer to operate within the tube, substantially as described.

2. The hammer D, to be operated within thegtube by means of the tripping-wheel Gr, in combination with the anvil A and furnace J, having an opening, d, in line with the anvil, substantially as and for the purpose set forth.

STEPHEN P. M. TAsKEE.

Witnesses:

THOMAS J. BEWLEY, STEPHEN UsTIcK. 

